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24LCS21_13 PDF预览

24LCS21_13

更新时间: 2024-11-01 12:52:31
品牌 Logo 应用领域
美国微芯 - MICROCHIP 可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数 文件大小 规格书
24页 240K
描述
1K 2.5V Dual Mode I2C™ Serial EEPROM

24LCS21_13 数据手册

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Not recommended for new designs –  
Please use 24LCS21A.  
24LCS21  
1K 2.5V Dual Mode I2CSerial EEPROM  
Features:  
Package Types  
• Completely implements DDC1/DDC2interface  
for monitor identification  
PDIP  
• Hardware write-protect pin  
1
2
3
4
8
7
6
5
VCC  
VCLK  
SCL  
SDA  
• Single supply with operation down to 2.5V  
• Low-power CMOS technology:  
NC  
NC  
- 1 mA active current, typical  
WP  
VSS  
- 10 A standby current, typical at 5.5V  
• 2-wire serial interface bus, I2Ccompatible (SCL)  
• Self-timed write cycle (including auto-erase)  
• Page-write buffer for up to 8 bytes  
SOIC  
• 100 kHz (2.5V) and 400 kHz (5V) compatibility  
(SCL)  
1
2
3
4
8
7
6
5
NC  
NC  
VCC  
VCLK  
SCL  
SDA  
• 1,000,000 erase/write cycles ensured  
• Data retention > 200 years  
WP  
VSS  
• 8-pin PDIP and SOIC package  
• Available for extended temperature ranges:  
- Commercial (C):  
- Industrial (I)  
0°C to +70°C  
-40°C to +85°C  
Description:  
Block Diagram  
The Microchip Technology Inc. 24LCS21 is a 128 x 8-bit  
dual-mode Electrically Erasable PROM. This device is  
designed for use in applications requiring storage and  
serial transmission of configuration and control informa-  
tion. Two modes of operation have been implemented:  
Transmit-Only mode and Bidirectional mode. Upon  
power-up, the device will be in the Transmit-Only mode,  
sending a serial bit stream of the entire memory array  
contents, clocked by the VCLK pin. A valid high-to-low  
transition on the SCL pin will cause the device to enter  
the Bidirectional mode, with byte selectable read/write  
capability of the memory array in standard I2C protocol.  
WP  
HV Generator  
I/O  
Control  
Logic  
Memory  
Control  
Logic  
EEPROM  
Array  
XDEC  
Page Latches  
SDA SCL  
YDEC  
VCLK  
Sense Amp  
R/W Control  
The 24LCS21 also enables the user to write-protect the  
entire memory contents using its write-protect pin. The  
24LCS21 is available in a standard 8-pin PDIP and  
SOIC package in both commercial and industrial  
temperature ranges.  
VCC  
VSS  
1995-2012 Microchip Technology Inc.  
DS21127G-page 1  

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